from small one page howto to huge articles all in one place
 

search text in:





Poll
Which kernel version do you use?





poll results

Last additions:
using iotop to find disk usage hogs

using iotop to find disk usage hogs

words:

887

views:

105028

userrating:

average rating: 1.7 (85 votes) (1=very good 6=terrible)


May 25th. 2007:
Words

486

Views

219393

why adblockers are bad


Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

words:

161

views:

99859

userrating:

average rating: 1.3 (28 votes) (1=very good 6=terrible)


April, 26th. 2006:

Druckversion
You are here: manpages





POSIX_FALLOCATE

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
Index Return to Main Contents
 

NAME

posix_fallocate - allocate file space  

SYNOPSIS

#include <fcntl.h>

int posix_fallocate(int fd, off_t offset, off_t len);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

posix_fallocate():

_XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L
 

DESCRIPTION

The function posix_fallocate() ensures that disk space is allocated for the file referred to by the descriptor fd for the bytes in the range starting at offset and continuing for len bytes. After a successful call to posix_fallocate(), subsequent writes to bytes in the specified range are guaranteed not to fail because of lack of disk space.

If the size of the file is less than offset+len, then the file is increased to this size; otherwise the file size is left unchanged.  

RETURN VALUE

posix_fallocate() returns zero on success, or an error number on failure. Note that errno is not set.  

ERRORS

EBADF
fd is not a valid file descriptor, or is not opened for writing.
EFBIG
offset+len exceeds the maximum file size.
EINVAL
offset was less than 0, or len was less than or equal to 0.
ENODEV
fd does not refer to a regular file.
ENOSPC
There is not enough space left on the device containing the file referred to by fd.
ESPIPE
fd refers to a pipe.
 

VERSIONS

posix_fallocate() is available since glibc 2.1.94.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
posix_fallocate() Thread safetyMT-Safe
 

CONFORMING TO

POSIX.1-2001.

POSIX.1-2008 says that an implementation shall give the EINVAL error if len was 0, or offset was less than 0. POSIX.1-2001 says that an implementation shall give the EINVAL error if len is less than 0, or offset was less than 0, and may give the error if len equals zero.  

NOTES

In the glibc implementation, posix_fallocate() is implemented using fallocate(2).  

SEE ALSO

fallocate(1), fallocate(2), lseek(2), posix_fadvise(2)  

COLOPHON

This page is part of release 3.81 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO
COLOPHON


Please read "Why adblockers are bad".



Other free services
toURL.org
Shorten long
URLs to short
links like
http://tourl.org/2
tourl.org
.
Reverse DNS lookup
Find out which hostname(s)
resolve to a
given IP or other hostnames for the server
www.reversednslookup.org
rdf newsfeed | rss newsfeed | Atom newsfeed
- Powered by LeopardCMS - Running on Gentoo -
Copyright 2004-2017 Sascha Nitsch Unternehmensberatung UG(haftungsbeschränkt)
Valid XHTML1.1 : Valid CSS : buttonmaker
- Level Triple-A Conformance to Web Content Accessibility Guidelines 1.0 -
- Copyright and legal notices -
Time to create this page: 3.4 ms